A member asked:

What is the chance of been allertic to zyrtec, (cetirizine) i used to take it as a child/teen for hayfever, i am now 22.

A doctor has provided 1 answer

Unlikely: Zyrtec (cetirizine) is a long acting antihistamine and as such works to block allergic responses (by blocking the histamines they trigger).Your system may not tolerate the side effects which include sedation in most, or the opposite in a few, but that is not an allergy.

Answered 6/21/2013

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